Quoted from J-Freeze:
I agree, if the problem started with the new chips I'd get a fresh set.
meloyelo51 doesn't have them listed on his website www.mattsbasementarcade.com but I'm sure he could rip you a good set if you contact him.
Yep I sure can burn a lot more than I have time to list!
Quoted from mrossman5:
Another update: for some reason the 1.01 cpu rom works with the 2.02 display rom, and the 2.02 cpu rom doesn’t work with the 2.02 display rom (modes don’t time out, drop target doesn’t work). Display animations are still weird.
I am wondering if there's an issue with that rom. The major versions should always match (ie 1.X or 2.X) or you can run into issues, some games won't even boot...so it's odd that your works better backwards. I always recommend replacing as a set.
What exact chips are you using for both CPU and DISP? I know all games after Maverick require 120ns or faster for the display roms.